MICROANATOMY

Detailed explanation-1: -Glial cells are cells that will aid in the differentiation of the neurons and will facilitate their growth in the direction of their target locations. Later, glial cells will participate in the reuptake of excess neurotransmitters in the synaptic cleft.

Detailed explanation-2: -The mechanisms by which neurotransmitters are removed vary but always involve diffusion in combination with reuptake into nerve terminals or surrounding glial cells, degradation by transmitter-specific enzymes, or in some cases a combination of these mechanisms.

Detailed explanation-3: -In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma.

Detailed explanation-4: -The neuromuscular junction (NMJ) is a synaptic connection between the terminal end of a motor nerve and a muscle (skeletal/ smooth/ cardiac). It is the site for the transmission of action potential from nerve to the muscle.